The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9, v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the master's host network (such as link-local or loopback services).

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9,     v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain     authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the     master's host network (such as link-local or loopback services). (CVE-2020-8555)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5727 advisory.

    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements
    - CVE-2020-8555: Half-Blind SSRF in kube-controller-manager
    - [CVE-2019-11254] kube-apiserver Denial of Service vulnerability from malicious YAML payloads
    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5725 advisory.

    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements
    - CVE-2020-8555: Half-Blind SSRF in kube-controller-manager

    kubeadm-ha-setup
    - Enhance image tag read to depend on kubeadm-registry.sh for CVE release       CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements       CVE-2020-8555: Half-Blind SSRF in kube-controller-manager

    kubernetes-cni

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5726 advisory.

    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements
    - CVE-2020-8555: Half-Blind SSRF in kube-controller-manager
    - [CVE-2019-11254] kube-apiserver Denial of Service vulnerability from malicious YAML payloads
    - Update to kubernetes-cni for CVE-2020-10749
    - Update Istio to use Grafana 6.7.4 to address CVE-2020-13379

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the kubernetes package has been released.

- Security fix for CVE-2020-8551, CVE-2020-8552,     CVE-2020-8555, CVE-2020-8945

  - Rebase to head of usptream 3.11 branch

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 / 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2594 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    Security Fix(es):

    * kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret     information (CVE-2020-8555)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 / 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2448 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    Security Fix(es):

    * kubernetes: Server side request forgery (SSRF) in kube-controller-manager allowed users to leak secret     information (CVE-2020-8555)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2479 advisory.

    OpenShift Enterprise by Red Hat is the company's cloud computing Platform-as-a-Service (PaaS) solution     designed for on-premise or private cloud deployments.

    Security Fix(es):

    * libseccomp-golang: mishandling of multiple argument rules leading to a bypass of intended access     restrictions (CVE-2017-18367)

    * kubernetes: Denial of service in API server via crafted YAML payloads by authorized users     (CVE-2019-11254)

    * kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret     information (CVE-2020-8555)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 / 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2440 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing     Kubernetes application platform solution designed for on-premise or private     cloud deployments.

    Security Fix(es):

    * kubernetes: A server side request forgery (SSRF) in the kube-controller-manager allows certain     authorized users to leak up to 500 bytes of arbitrary information from the master's host network     (CVE-2020-8555)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
256464	Linux Distros Unpatched Vulnerability : CVE-2020-8555	Nessus	Misc.	medium
180996	Oracle Linux 7 : kubernetes-cni-plugins / kubernetes-cni / kubernetes / olcne (ELSA-2020-5727)	Nessus	Oracle Linux Local Security Checks	medium
180943	Oracle Linux 7 : kubernetes / kubeadm-ha-setup / kubernetes-cni / kubernetes-cni-plugins (ELSA-2020-5725)	Nessus	Oracle Linux Local Security Checks	medium
180932	Oracle Linux 7 : grafana / kubernetes-cni / kubernetes-cni-plugins / kubernetes / kubernetes / olcne (ELSA-2020-5726)	Nessus	Oracle Linux Local Security Checks	high
140715	Photon OS 2.0: Kubernetes PHSA-2020-2.0-0285	Nessus	PhotonOS Local Security Checks	medium
140706	Photon OS 3.0: Kubernetes PHSA-2020-3.0-0142	Nessus	PhotonOS Local Security Checks	medium
138918	Fedora 32 : origin (2020-aeea04cd13)	Nessus	Fedora Local Security Checks	high
138026	RHEL 7 / 8 : OpenShift Container Platform 4.2.36 openshift (RHSA-2020:2594)	Nessus	Red Hat Local Security Checks	medium
137727	RHEL 7 / 8 : OpenShift Container Platform 4.4.8 openshift (RHSA-2020:2448)	Nessus	Red Hat Local Security Checks	medium
137668	RHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2020:2479)	Nessus	Red Hat Local Security Checks	high
137562	RHEL 7 / 8 : OpenShift Container Platform 4.3.25 openshift (RHSA-2020:2440)	Nessus	Red Hat Local Security Checks	medium

Detections

Analytics

CVE-2020-8555

medium

Tenable Plugins

medium

medium

medium

high

medium

medium

high

medium

medium

high

medium